Climate averages 1991–2020
Morioka weather
in August.
A warm, wet month: the warmest and the joint 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Morioka: daytime highs average 25.9°C and nights cool to about 18.8°C. By daytime temperature it is the warmest month of the year.
Expect about 137 mm of rain on roughly 15 days, which makes August a wet month (the joint 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 44 min on an average August day.
The nearest other city in this atlas is Hanamaki (35 km away). In August its highs average 26.5°C, 0.5°C warmer than Morioka, with 141 mm of rain.
Among the 303 cities listed in Japan, Morioka ranks 289th of 303 for the warmest August highs and joint 116th of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Morioka is 3.3°C cooler than that mean.
From August to September, average highs fall by 4.0°C to 21.9°C, and monthly rainfall stays at 137 mm.
The annual picture
August in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Morioka climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -0.4°C-7.9°C | -7.9°C | 64 | 11.5 | 9.710 h |
| February | 0.6°C-7.3°C | -7.3°C | 61 | 11.3 | 10.711 h |
| March | 4.5°C-3.7°C | -3.7°C | 93 | 14.7 | 11.912 h |
| April | 11.6°C1.9°C | 1.9°C | 92 | 14.0 | 13.213 h |
| May | 18.1°C8.2°C | 8.2°C | 94 | 12.8 | 14.314 h |
| June | 21.8°C13.3°C | 13.3°C | 101 | 12.3 | 14.915 h |
| July | 24.8°C17.7°C | 17.7°C | 148 | 16.3 | 14.715 h |
| August, selected | 25.9°C18.8°C | 18.8°C | 137 | 14.6 | 13.714 h |
| September | 21.9°C14.8°C | 14.8°C | 137 | 12.4 | 12.512 h |
| October | 15.9°C8.0°C | 8.0°C | 110 | 11.4 | 11.211 h |
| November | 9.0°C1.6°C | 1.6°C | 78 | 12.9 | 10.010 h |
| December | 2.3°C-4.5°C | -4.5°C | 77 | 13.2 | 9.49 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Hanamaki in AugustJapan · 35 kmHigh 26.5°C · Low 19.3°C · 141 mm rain
- Kitakami in AugustJapan · 46 kmHigh 26.4°C · Low 19.3°C · 162 mm rain
- Ōshū in AugustJapan · 62 kmHigh 27.0°C · Low 19.9°C · 153 mm rain
- Daisen in AugustJapan · 64 kmHigh 27.2°C · Low 20.0°C · 173 mm rain
- Yokote in AugustJapan · 67 kmHigh 27.1°C · Low 19.9°C · 180 mm rain
- Ichinoseki in AugustJapan · 87 kmHigh 26.9°C · Low 19.8°C · 142 mm rain
- Akita in AugustJapan · 88 kmHigh 26.5°C · Low 21.1°C · 203 mm rain
- Hachinohe in AugustJapan · 94 kmHigh 26.3°C · Low 19.6°C · 132 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Morioka) is explained once on the Morioka year overview and on the Sources, method and limits page.